Doesn't the 767/777 have it's own extendable stairs under the front door like the 737?
Never flown one so no idea.
Boing-
I wouldn't have thought looking at the ground from 7 miles up was a very professional way to assess diversion capabilities in the first place, never mind if you can see bu***r all but sheep.
For all you know there could be a fully-equipped USAF base down there that you missed while trying to spot hospitals from FL370.
Talking to a knowledgable and helpful controller, even if he is sitting 150 miles away in Prestwick, would surely be your first priority.
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You start off with an empty bag of experience and a full bag of luck. The trick is to fill the bag of experience before you empty the bag of luck.